Look at these two photos of my shadow from sunlight.
Case 1: My shadow is separated from the shadow of the ceiling and my head is round.
Case 2: But when I walk a little more and the shadow of my head and the shadow of the ceiling are almost together, the shadow of my head tends to deform. Why?
Edit: Ok. The deformation is because the sun is not a point source and there are fuzzy shadows. But when I look the second picture only my head is deformed and not the ceiling, why?
Here is another picture.